Air conditioner



FIG. 1 . is a perspective view of the front, right, and bottom sides of an air conditioner showing our new design;

FIG. 2 . is a front view thereof;

FIG. 3 . is a rear view thereof;

FIG. 4 . is a left side view thereof;

FIG. 5 . is a right side view thereof,

FIG. 6 . is a top plan view thereof; and,

FIG. 7 . is a bottom plan view thereof.

The broken lines shown in the figures are for the purpose of illustrating portions of the air conditioner and form no part of the claimed design. 

CLAIM The ornamental design for an air conditioner, as shown and described. 